Presyncope

Presyncope is a state of lightheadedness, muscular weakness, blurred vision, and feeling faint (as opposed to a syncope, which is actually fainting). Presyncope is connected to insufficient blood flow to the brain or sudden changes in the position of the body.

Causes

Presyncope can be caused by various conditions. Some of the most common include:

• Orthostatic hypotension: This is a form of low blood pressure that happens when you stand up from sitting or lying down.
• Cardiac arrhythmia: Irregular heartbeats can cause presyncope.
• Vasovagal syncope: This is a common cause of fainting. The vagus nerve controls your body's blood pressure and heart rate. If this nerve gets overstimulated, it can cause a sudden drop in both of these readings, leading to presyncope.
• Dehydration: When your body doesn't have enough water, it can cause low blood pressure, which can lead to presyncope.

Symptoms

The symptoms of presyncope can vary from person to person, but they often include:

• Feeling lightheaded or dizzy
• Nausea
• Yawning
• Sweating
• Blurred vision
• Rapid heartbeat

Diagnosis

To diagnose presyncope, a doctor will typically ask about your medical history and perform a physical examination. They may also order tests such as:

• Electrocardiogram (ECG): This test measures the electrical activity of your heart.
• Echocardiogram: This test uses sound waves to create a detailed image of your heart.
• Tilt table test: This test can help determine how your body responds to changes in position.

Treatment

Treatment for presyncope depends on the underlying cause. It may include:

• Medications: If presyncope is caused by an irregular heartbeat, medications can help regulate your heart rate.
• Lifestyle changes: If presyncope is caused by dehydration or orthostatic hypotension, drinking plenty of fluids and avoiding sudden changes in position can help.
• Surgery: In rare cases, if presyncope is caused by a serious heart condition, surgery may be necessary.

See also

• Syncope
• Dizziness
• Vertigo

Presyncope Resources
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